﻿// 
// LocalVariableHideFieldIssue.cs
// 
// Author:
//      Mansheng Yang <lightyang0@gmail.com>
// 
// Copyright (c) 2012 Mansheng Yang <lightyang0@gmail.com>
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using ICSharpCode.NRefactory.Semantics;

namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
	[IssueDescription ("Local variable hides a member",
					   Description = "Local variable has the same name as a member and hides it.",
					   Category = IssueCategories.CodeQualityIssues,
					   Severity = Severity.Suggestion,
					   IssueMarker = IssueMarker.Underline)]
	public class LocalVariableHidesMemberIssue : VariableHidesMemberIssue
	{
		internal override GatherVisitorBase GetGatherVisitor (BaseRefactoringContext context)
		{
			return new GatherVisitor (context);
		}

		class GatherVisitor : GatherVisitorBase
		{
			public GatherVisitor (BaseRefactoringContext ctx)
				: base (ctx)
			{
			}

			public override void VisitVariableInitializer (VariableInitializer variableInitializer)
			{
				base.VisitVariableInitializer (variableInitializer);

				if (!(ctx.Resolve (variableInitializer) is LocalResolveResult))
					return;
				if (HidesMember (ctx, variableInitializer, variableInitializer.Name))
					AddIssue (variableInitializer.NameToken,
						ctx.TranslateString ("Local variable has the same name as a member and hides it"));
			}

			public override void VisitForeachStatement (ForeachStatement foreachStatement)
			{
				base.VisitForeachStatement (foreachStatement);

				if (HidesMember (ctx, foreachStatement, foreachStatement.VariableName))
					AddIssue (foreachStatement.VariableNameToken,
						ctx.TranslateString ("Local variable has the same name as a member and hides it"));
			}
		}
	}
}
